Port-Powered RS232 to RS422 Converter

IT-SC422-TLC-9 is the interface converter between RS232 and RS422. It is powered from serial port (such as COM port of computer), no outside power needed. Small size, long transmission distance, high rate, stable performance. The IT-SC422-TLC-9 has a DB9 female connector on the RS232 side and either a DB9 male connector or 5 bit terminal block on the RS422 side. It is used widely in the field of electricity, industrial automatic control, IC card billing system. It is a high quality low price data serial conversion product.





  • Port-powered from RS232 port (TXD, RTS, DTR): no external power is necessary
  • Convert RS-232 (TXD, RXD signal) to RS-422 signal
  • Plug-and-Play (hot pluggable, Data format Auto sensing & Self-adjusting)
  • Data direction auto-turnaround, no flow control is required
  • Point to multi point, support 128 nodes loopback


Standards: EIA RS-232C, RS-422 standard
RS-232 signal: TX, RX, GND
RS-422 signal: T+, T-,R+,R-, GND
Working mode: Asynchronism, point to point, 4 wire full-duplex
Transfer rate: 300~115200bps, auto test serial signal rate detect signal speed automatically, zero delay time
Flow control: Data direction auto-turnaround, no flow control is required
Max number of drops: 128 nodes
Transfer distance: RS-422 side: 1.2Km
RS-232 side: no less than 5m
Port protect: 1500W surge protection, 15KV ESD protection
Connector: RS-232 side DB9 female
RS-422 side: DB9M ( DB9F to 5 bit terminal block)
Power input: No power supply need, powered from RS-232 port
Consumption: Static less than 10mA, dynamic less than 40mA
Operating temperature: -20°C to 60°C
Storage temperature: -40°C to 85°C
Humidity: 5% to 95% (no condensation)
Dimensions: 90.0mm×33.0mm×16.5mm (DB9)
Material: Plastic (shell)
Weight: 40g
Warranty: 3 years
Approvals: FCC, CE, RoHS approvals

Product Datasheet

Intellisystem Technologies